Counterfeiting of money involves illegally reproducing currency to pass off as genuine. It has occurred for centuries and undermines economies. Governments now use advanced technologies to detect counterfeits. Criminals typically work in organized networks with skills and resources to create high-quality fakes. While detection methods improve, counterfeiting continues. Philippine law punishes counterfeiting with prison time and fines. Educating the public on security features and reporting procedures can help reduce counterfeiting's harms.